fix(rewards): send rewards key instead of amount in command data

modules/legacy/modules/device_management/lib/src/features/rewards/presentation/state/rewards_view_model.dart

@@ -67,7 +67,7 @@ class RewardsViewModel extends Notifier<RewardsViewState> {
       final request = SendCommandRequestModel(
         device: device!.identificator.toString(),
         command: DeviceCommand.rewards,
-        data: {'amount': state.amount},
+        data: {'rewards': state.amount},
       );
 
       await _commandsRepository.send(request: request);